（11.11特供）Mobile Payment VS Cash：Are We Creating A One day a year ago I accidentally left my wallet in home and went out. All I found in my bag were keys and mobile phone. At that moment I thought :“Oh my god I'm screwed，what should I do ?”But Then I ride a mobike to a near shopping mall ,bought a beautiful skirt . Obviously, cash is falling out of fashion. So will it disappear forever? I guess not. Cash may become less popular, but it will remain with us forever. Why?
This is an example to show the potential of an offcanvas layout pattern in Bootstrap. Try some responsive-range viewport sizes to see it in action. Heading Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. View details raquo;
sql 练习(四) 31、查询所有“女”教师和“女”同学的name、sex和birthday. SELECT sname,ssex,sbirthday FROM student WHERE ssex = '女' UNION SELECT tname,tsex,tbirthday FROM teacher WHERE tsex = '女' 32、查询成绩比该课程平均成绩低的同学的成绩表。 SELECT a.sno,a.cno,a.degree FROM score a LEFT JOIN ( SELECT AVG(degree) degree,cno FROM score GROUP BY cno)b ON a.cno=b.cno WHERE a.degree b.degree SELECT Sno,Cno